<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区 -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="" />
      </div>

      <!-- 登录表单 -->
      <el-form class="login_form" ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px">
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="el-icon-user-solid"> </el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input v-model="loginForm.password" prefix-icon="el-icon-lock" type="password"> </el-input>
        </el-form-item>
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>
<script>
export default {
  data() {
    return {
      // 数据绑定
      loginForm: {
        username: 'admin',
        password: '123456',
      },
      // 验证规则对象
      loginFormRules: {
        username: [
          { required: true, message: '请输入登录名称', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '长度在 3 到 10 个字符',
            trigger: 'blur',
          },
        ],
        // 验证密码是否合法
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '长度在 6 到 15 个字符',
            trigger: 'blur',
          },
        ],
      },
    }
  },
  methods: {
    // 重置表单
    resetLoginForm() {
      // console.log(this);
      this.$refs.loginFormRef.resetFields()
    },
    login() {
      this.$http
        .post('login', {
          params: {
            username: this.loginForm.username,
            password: this.loginForm.password,
          },
        })
        .then((res) => {
          console.log(res)
        })
      this.$refs.loginFormRef.validate(async (valid) => {
        console.log(valid) // valid是一个布尔值
        // 校验规则如果不成立，就直接结束
        if (!valid) return

        const { data: res } = await this.$http.post('/login', this.loginForm)
        // console.log(res)
        if (res.meta.status !== 200) return this.$message.error('登陆失败')
        this.$message.success('登录成功')

        // 1、登录成功将用户的token存储到sessionStorage中
        // 2、项目中除了登录接口，其他的都必须设置token才能访问
        // 3、token只在当前网页打开时生效，所以说token要保存到sessionStorage中
        window.sessionStorage.setItem('token', res.data.token)
        // 跳转页面
        this.$router.push('/home')
      })
    },
  },
}
</script>

<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}

.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
.avatar_box {
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  height: 130px;
  width: 130px;
  border: 1px solid #eee;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 0 10px #ddd;
  background-color: #fff;
  img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #eee;
  }
}
.btns {
  display: flex;
  // 居右对齐
  justify-content: flex-end;
}
.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
</style>






